Abrading-machine.



I Mr/mass 6 (if/ag J. KRESS.

ABRADING MAOHIEE.

APPLIOATION FILED JUNE 20, 1914.

Patented Mar. 16, 1915.

2 SHEETS-SHEET 1.

INVENTOR MTOR/VEY ABRADING MACHINE. APPLICATION FILED JUNE 20, 1914.

Patented Mar. 16, 1915.

2 SHEETS-SHEET 2.

as; 1% I1 WITNESSES I v /lVVE/VTOP JZhnKre$s 11 v A TTOR/VEY JOHN KRESS, OF NEW ROCHELLE, NEW YORK.

ABR-ADING-MACHINE.

Specification of Letters Patent.

Patented Mar. 16, 1915.

Application filed June 20, 1914. Serial No. 846,265.

'knives and an object of the invention 1s to provide a device of this character particularly adapted for household purposes which can be supplied with different grinding, bufling and polishing tools, which can be readily and quickly inserted therein to perform their different functions.

Other objects of the invention are to provide such a device with the least possible number of separate parts, to arrange the parts so that they may be readily dismounted for cleaning and to inclose the gearing so to protect the operator and at the same time to provide a device which can be cheaply marketed.

Various other objects and advantages of the invention will be in part obvious from an inspection of the accompanying drawings and in part will be more fully set forth in the following particular description of one form of mechanism embodying the invention, and the invention further consists in certain new and novel features of construction and combination of parts hereinafter set forth and claimed.

In the accompanying drawings: Figure-1 is a front elevation partly in vertical section showing a preferred embodiment of my invention; Fig. 2 is a side elevation of the right hand side of the device shown in Fig. 1; and Fig. 8 is a rear side view of one of the abrading tools.

There is shown a support comprising a base plate 1 which may be fastened to a suitable supporter, such as the kitchen table 2, by means of a suitable clamp 3 as is .usual with devices of this character. Fixed to the base plate is a pair of upright inclosing casings 1 and 5, journaled within the lower por tion of which is a driving mechanism comprising a shaft 6 rotated by any suitable means as by the crank handle 7. Fixed to the shaft and protected by the casings 1 and 5 are a pair of gear wheels 8 and 9. The gear wheel 8 is in mesh with a gear wheel 10 which is removably mounted on the noncircular portion 11 of a stub shaft 12 formng a part of a removable tool 13 which is ou rnaled 1n the casing 4: above the shaft 6. TlllS tool has a face plate let fixed to the inner end of the shaft 12 and has suitable abradmg material 15 affixed to the face opposite the shaft. This abrading material may be emery, soapstone, carborundum, felt, cloth, or any other substance used for grinding, polishing or buffing knives. In order to give the working faces of these abrading tools a slight inclination for a purpose hereinafter described the shaft 12 is inclined and the gear wheels 8 and 10 may be slightly beveled but with the use of large commercial gear wheels this is usually unnecessary. The

, tools'are removably held in place by means of a spring pin 16 engaging in a peripheral groove 17 in the shaft 12. A hearing 18 is hinged to the upper edge of the casing 5 and forms a continuation of the same paralleling the upper portion of the casing 41:. I

Removably journaled in the plate 18 is a tool 19 resembling the tool 13 and when in operative position as shown in full lines in Fig. 1 coacting therewith to form an angled opening 20 equal to or preferably slightly greater than the angle of the cutting edges of the knife to be sharpened. The tool 19 is driven from the driving gear wheel 9 through the gear wheel 21 which resembles the gear wheel 10.

A U-shaped yoke 22 has its ends pivoted to the plate 18 above its hinged connection with the casing 5, incloses the casing 1 and has a thumb screw 23 threaded therethrough and bearing on said casing to maintain the tools adjustable relative to each other when in their operative position.

In operation the screws 23 are loosened to permit the plate to be moved into an inoperative position such as is shown in the dot and dash lines of Fig. 1 and by withdrawing the pins 16 any desired character of tool may be mounted in the casing 4 and plate 19 and then fastened in place. Instead of the gear wheels 10 and 21 being loose, they may form a fixed part of each tool, but the loose wheels form a more economical structure. When set with the desirable tools the plate 18 is drawn toward the full line posi tion shown in Fig. 1 and held from outward movement by means of the engagement of the screw with the outside of the casing 4. The knife is then wedged into the angled opening 20 betweenthe working faces of the 25 claim:

tools and the handle 7 rotated until the desired surface is produced on the knife when another tool may be substituted as described. By means .of a structure such as described 6 a simple household article is produced which ma be convenientl set up and'in which di erent kinds'of a rading surfaces may be conveniently mounted without the use of screwdrivers or other fastening tools;

10 By simply turning .the thumb screw any working angle may be obtainedibetween the abrading surfaces thereby to accommodate" different types of knife blades and the entire device is inolosed and the parts are arranged to mutually brace each other with the use of the'least possible amount of material.

7 Y Although'I have shown only one form of mechanism embodying my invention, it is obvious that various changes within the skill 4 of the mechanic may be made therein without departing from the spirit of the inven tion, provided the-means set forth in the following claims are emdployed,

Having thus describe my invention, I

'1. In -a.ldevice of the class described, a

support having anabrading tool remova'bly journaled therein, a hinged platemovable relative to said support, a, second abrading I 'tool 'jo'urnaled in said plate" and movable therewith into an angular portion relative to said first named abrading tool, a yoke pivoted'to said hinged' platefandinclosin said I r 1: *support, a thumb screw-carried by sai yoke '85-' and bearing'on' said support to maintains'aid toolsjin; their o erativel osition and means for, driving'sai .-tools --"'?.'gear inclosin casing- .having'a journal in 1 40. the form of a ub projecting therefrom, a,re-

-,-.-;' Blaceable 'abrading member having a shaftxed" theretofand removably mounted in "f- ""said journal-Tand "means passing through, wjsaid' hub forflocking said shaft in position,

said sham having a non-circular portion "within-thecasing, a- 'gear wheel removably mounted "on said portion to rotate the shaft anda drivin gear wheel. mounted in said casing, positioned below and adapted to mesh with said removable gear wheel.

' 3. In a device of the class described, a support, a. driving shaft journaled'in said support, a pair of gear wheels fixed to sald shaft, a airv of'coacting abrading members I i I removab y mounted for rotary movement and normally in meshrespectively with said gear wheels one of said members movable relative to the other member to permit the said plate for maintaining said member-- in an operative position and a driving connection between said mechanism and said abrading member when held in o erative'position.

5. In a device of the c ass described, a pair of oppositelydisposed abrading mem-" bers rotatably mounted with their adjacent faces disposed at a slight angle to each other to permit the insertion of a blade therebetween to be sharpened simultaneously on.

opposite sides and manually actuated means for simultaneously rotating said members. 6. 'In a device of the class described, a

pair of rotary abrading tools having oppositely disposed working surfaces adapted '--to be positioned at a slight angletoeach other and means for varying the axis of rotation of one of said tools relative to the axis of rotation of the other tool.

Signed at New Rochelle in the county of Westchester and State of New York this .15th day of June A. D., 1914. e

JOHN KRESS.

'Witnpfsses: J I

OHN Knees r. Y EUGENE P. 

